Unnamed (west of lower Ramshole Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au; Ba
Ore minerals barite; gold

Geographic location

Quadrangle map, 1:250,000-scale NB
Quadrangle map, 1:63,360-scale A-3
Latitude 62.1225
Longitude -142.3533
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the nose of the ridge along the west side of lower Ramshole Creek. It is at an elevation about 5,500 feet, 2,200 feet west of Ramshole Creek. The occurrence is in the SW1/4 of section 17, T. 4 N., R. 17 E. of the Copper River Meridian. This record includes National Park Service locality WRST-52 (unpublished data) which is approximately located on Ramshole Creek. This occurrence is probably located to within several thousand feet.

Geologic setting

Geologic description

Richter and Matson (1969) found massive, dark- gray barite float at this site; the float is probably nearly in place. National Park Service locality WRST-52 (unpublished data) is identified as a gold prospect here or near here. Bedrock in the area is siliciclastic sedimentary rocks of the Permian Eagle Creek Formation (Richter, 1976). Triassic gabbro intrusions are common in this formation and locally make up to 70 percent of the section (Richter, 1971 [I-655]).
Geologic map unit (-142.35542846988, 62.1221207600333)
Mineral deposit model Stratiform or vein barite?
Age of mineralization Permian? May be the age of the host sedimentary rocks.

Production and reserves

Workings or exploration Probably only surface examination.
Indication of production None

Additional comments

The occurrence is in the Wrangell-St. Elias National Preserve.

References